Answer:
French Revolution, also called Revolution of 1789, revolutionary movement that shook France between 1787 and 1799 and reached its first climax there in 1789—hence the conventional term “Revolution of 1789,” denoting the end of the ancien régime in France and serving also to distinguish that event from the later French ...
Explanation:
The correct answer is a neutral stimulus.
A neutral stimulus (such as a bell, or an object), that is repeatedly followed by unconditioned stimulus, eventually elicits a conditioned response. For instance, in Ivan Pavlov's famous classical conditioning study, he repeatedly paired a neutral stimulus (a ringing bell) that came before an unconditioned stimulus (food), and eventually the sound of the bell alone elicited a conditioned response (salivating) in dogs.